A pilot is flying an approach to an airport with a published Localizer Directional Aid (LDA) approach. The LDA course is offset by 15 degrees from the runway centerline. The pilot has established the aircraft on the LDA course and is approaching the Missed Approach Point (MAP). What is the critical factor for the pilot to consider for a successful landing from this approach?
- AExecuting a missed approach if the runway environment is not acquired by the MAP, regardless of the offset.
- BVisually acquiring the runway environment and maneuvering the aircraft to align with the runway for a normal landing.
- CMaintaining the LDA course until reaching the runway threshold, then executing a side-step maneuver.
- DEnsuring the aircraft is precisely aligned with the runway centerline by the MAP.
Show answer & explanationAnswer & explanation
Correct answer: B. Visually acquiring the runway environment and maneuvering the aircraft to align with the runway for a normal landing.
An LDA approach, especially one with an offset course, requires the pilot to visually acquire the runway environment and then maneuver the aircraft to align with the runway for a normal landing. Unlike an ILS, the LDA course may not be aligned with the runway, necessitating a visual transition to the runway. The pilot must have sufficient visibility to make this visual maneuver safely.
Why the other options are wrong
- A. While executing a missed approach if visual is not acquired is correct, the question focuses on the specific challenge of the offset course once visual is acquired.
- C. Maintaining the LDA course to the threshold with a 15-degree offset would result in a significant misalignment, making a 'side-step' maneuver potentially unsafe or impossible without adequate visual reference and distance.
- D. Precision alignment by the MAP is not guaranteed or expected with an offset LDA; visual maneuvering is required.
Offset LDA Approach
A Localizer Directional Aid (LDA) approach where the final approach course is not aligned with the runway centerline. Pilots must acquire visual reference to the runway and maneuver visually to align for landing.
- LDA course is offset from runway centerline.
- Requires visual maneuver to align with runway.
- Not a precision approach unless equipped with glideslope (LDA/GS).
- Visibility minimums are crucial for the visual segment.
Memory trick: Offset LDA: 'Look, then Deviate, then Align'.